US3335332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time delay unit
Assignee: Hancock Telecontrol Corp
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Filing: 1964-09-29
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Granted: 1967-08-08
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Expires: 1984-09-29
Abstract
No abstract record available.
Inventors
- 👤 Zdzieborski J H George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 02:50
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/28; H03K17/292; H03K3/00; H03K3/02; H03K3/35; H03K3/351
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
AN ELECTRICAL TIME DELAY UNIT COMPRISING, IN COMBINATION; (A) A SOURCE CONNECTED ACROSS FIRST AND SECOND INPUT TERMINALS; (B) A RESISTOR CONNECTED BETWEEN SAID FIRST INPUT TERMINAL AND A FIRST JUNCTION; (C) A TIMING CAPACITOR CONNECTED BETWEEN SAID FIRST JUNCTION AND SAID SECOND INPUT TERMINAL, SAID CAPACITOR BEING (1) CHARGED BY SAID SOURCE AT A PREDETERMINED RATE; (D) A FIRST POTENTIAL DIVIDER CONNECTED ACROSS SAID INPUT TERMINALS, SAID FIRST POTENTIAL DIVIDER HAVING (1) A SECOND JUNCTION; (E) A SECOND POTENTIAL DIVIDER CONNECTED ACROSS SAID INPUT TERMINALS, SAID SECOND POTENTIAL DIVIDER INCLUDING (1) A THIRD JUNCTION; (F) A UNIJUNCTION TRANSISTOR HAVING (1) AN EMITTER TERMINAL CONNECTED TO SAID FIRST JUNCTION, (2) A BASE ONE TERMINAL CONNECTED TO SAID SECOND JUNCTION, AND (3) A BASE TWO TERMINAL CONNECTED TO SAID THIRD JUNCTION, (4) SAID UNIJUNCTION TRANSISTOR OPERATING TO FIRE AND PROVIDE AN OUTPUT INDICATION SIGNALLING THE EXPIRATION OF A PREDETERMINED TIME DELAY WHEN THE VOLTAGE AT SAID FIRST JUNCTION REACHES A PREDETERMINED PERCENTAGE OF THE VOLTAGE DIFFERENTIAL BETWEEN SAID SECOND AND THIRD JUNCTIONS, (A) THE VOLTAGE AT SAID SECOND JUNCTION BEING LARGE RELATIVE TO THE VOLTAGE DIFFERENTIAL BETWEEN SAID SECOND AND THIRD JUNCTIONS.
Claim 2
Dependent Claim
191 words
AN ELECTRICAL TIME DELAY UNIT COMPRISING, IN COMBINATION; (A) A SOURCE CONNECTED ACROSS FIRST AND SECOND INPUT TERMINALS; (B) A RESISTOR CONNECTED BETWEEN SAID FIRST INPUT TERMINAL AND A FIRST JUNCTION; (C) A TIMING CAPACITOR CONNECTED BETWEEN SAID FIRST JUNCTION AND SAID SECOND INPUT TERMINAL, SAID CAPACITOR BEING (1) CHARGED BY SAID SOURCE AT A PREDETERMINED RATE; (D) A FIRST POTENTIAL DIVIDER CONNECTED ACROSS SAID INPUT TERMINALS, SAID FIRST POTENTIAL DIVIDER HAVING (1) A SECOND JUNCTION; (E) A SECOND POTENTIAL DIVIDER CONNECTED ACROSS SAID INPUT TERMINALS, SAID SECOND POTENTIAL DIVIDER INCLUDING (1) A THIRD JUNCTION; (F) A UNIJUNCTION TRANSISTOR HAVING (1) AN EMITTER TERMINAL CONNECTED TO SAID FIRST JUNCTION, (2) A BASE ONE TERMINAL CONNECTED TO SAID SECOND JUNCTION, AND (3) A BASE TWO TERMINAL CONNECTED TO SAID THIRD JUNCTION, (4) SAID UNIJUNCTION TRANSISTOR OPERATING TO FIRE AND PROVIDE AN OUTPUT INDICATION SIGNALLING THE EXPIRATION OF A PREDETERMINED TIME DELAY WHEN THE VOLTAGE AT SAID FIRST JUNCTION REACHES A PREDETERMINED PERCENTAGE OF THE VOLTAGE DIFFERENTIAL BETWEEN SAID SECOND AND THIRD JUNCTIONS, (A) THE VOLTAGE AT SAID SECOND JUNCTION BEING LARGE RELATIVE TO THE VOLTAGE DIFFERENTIAL BETWEEN SAID SECOND AND THIRD JUNCTIONS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |